Converters
Convert units, currencies and time zones, turn Word, Markdown and HTML into each other, and move data between CSV, JSON and Excel in your browser.
All 14 tools
Currency converter
Live rates for the som and 70+ other currencies.
Unit converter
Length, weight, temperature, area, volume and speed.
Time zone converter
Compare a time across several zones at once.
DOCX to text
Pull the plain text out of a Word document.
DOCX to HTML
Turn a Word document into clean HTML.
DOCX to Markdown
Convert a Word document to Markdown.
Markdown to HTML
Render Markdown as HTML, with a live preview.
HTML to Markdown
Convert HTML into clean Markdown.
CSV to JSON
Convert a spreadsheet export into JSON.
JSON to CSV
Flatten JSON into a spreadsheet-ready CSV.
CSV to Excel
Turn a CSV into a real .xlsx workbook.
Excel to CSV
Export a sheet from an .xlsx as CSV.
Excel to JSON
Convert a spreadsheet sheet into JSON.
JSON to Excel
Turn JSON into an .xlsx workbook.
About these tools
File formats are mostly invisible until something refuses to open, and then they are the only thing that matters. These converters handle the everyday cases: Word documents into PDF, spreadsheets into CSV, HEIC photos from an iPhone into JPEG, images into PDF, and a handful of formats that Windows and Android disagree about.
The conversion happens on your machine using libraries downloaded to the page — mammoth for Word, SheetJS for spreadsheets, libheif compiled to WebAssembly for HEIC. Nothing is queued on a server, so a large file is limited by your own device rather than by someone's free tier, and a document with anything confidential in it stays where it is.
Converting is lossy more often than people expect. A Word file turned into a PDF keeps its layout but loses its editability; a spreadsheet saved as CSV keeps the numbers and loses the formulas, the formatting and every sheet except the first. When a conversion has to be reversible, keep the original rather than planning to convert back.